Earplug



FIG. 1 is a left, side-view of an earplug;

FIG. 2 is a right, side-view of the earplug;

FIG. 3 is a bottom-view of the earplug;

FIG. 4 is a top-view of the earplug;

FIG. 5 is a front-view of the earplug; and,

FIG. 6 is a rear-view of the earplug. 

CLAIM The ornamental design for an earplug, as shown and described. 